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IT8422018A0 - MAGNETOPLUMBITE. WET PROCESS FOR THE PREPARATION OF FINE STRUCTURE FERRITE PARTICLES - Google Patents

MAGNETOPLUMBITE. WET PROCESS FOR THE PREPARATION OF FINE STRUCTURE FERRITE PARTICLES

Info

Publication number
IT8422018A0
IT8422018A0 IT8422018A IT2201884A IT8422018A0 IT 8422018 A0 IT8422018 A0 IT 8422018A0 IT 8422018 A IT8422018 A IT 8422018A IT 2201884 A IT2201884 A IT 2201884A IT 8422018 A0 IT8422018 A0 IT 8422018A0
Authority
IT
Italy
Prior art keywords
magnetoplumbite
preparation
fine structure
wet process
ferrite particles
Prior art date
Application number
IT8422018A
Other languages
Italian (it)
Other versions
IT1196198B (en
IT8422018A1 (en
Inventor
Masanori Hayakawa
Noriaki Yamada
Hiromi Kawamoto
Satoshi Nishimura
Original Assignee
Central Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP58136812A external-priority patent/JPS6033218A/en
Priority claimed from JP58229185A external-priority patent/JPS60122726A/en
Application filed by Central Glass Co Ltd filed Critical Central Glass Co Ltd
Publication of IT8422018A0 publication Critical patent/IT8422018A0/en
Publication of IT8422018A1 publication Critical patent/IT8422018A1/en
Application granted granted Critical
Publication of IT1196198B publication Critical patent/IT1196198B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/009—Compounds containing iron, with or without oxygen or hydrogen, and containing two or more other elements
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00—Compounds of cobalt
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G53/00—Compounds of nickel
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/30—Three-dimensional structures
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
IT22018/84A 1983-07-28 1984-07-24 WET PROCEDURE FOR THE PREPARATION OF FINE PARTICLES OF MAGNETOPLUMBITE STRUCTURE IT1196198B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58136812A JPS6033218A (en) 1983-07-28 1983-07-28 Wet method for manufacturing magnetoplumbite type ferrite fine particle
JP58229185A JPS60122726A (en) 1983-12-06 1983-12-06 Manufacture of fine particle of magneto plumboferrite by wet process

Publications (3)

Publication Number Publication Date
IT8422018A0 true IT8422018A0 (en) 1984-07-24
IT8422018A1 IT8422018A1 (en) 1986-01-24
IT1196198B IT1196198B (en) 1988-11-10

Family

ID=26470310

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22018/84A IT1196198B (en) 1983-07-28 1984-07-24 WET PROCEDURE FOR THE PREPARATION OF FINE PARTICLES OF MAGNETOPLUMBITE STRUCTURE

Country Status (5)

Country Link
US (1) US4551260A (en)
DE (1) DE3427632C2 (en)
FR (1) FR2549821B1 (en)
GB (1) GB2144114B (en)
IT (1) IT1196198B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151341A (en) * 1983-02-16 1984-08-29 Fuji Photo Film Co Ltd Manufacture of magnetic ferrite powder for magnetic recording
GB2173811B (en) * 1985-04-05 1988-08-24 Tdk Corp Magnetic recording medium
JPH0760511B2 (en) * 1985-06-26 1995-06-28 株式会社東芝 High durability magnetic recording medium
US4726990A (en) * 1985-11-06 1988-02-23 Tdk Corporation Magnetic recording medium
US4765920A (en) * 1986-07-14 1988-08-23 Cabot Corporation High temperature process for producing fine magnetic particles of M-phase structure
US4820433A (en) * 1986-09-05 1989-04-11 Nippon Zeon Co., Ltd. Magnetic powder for magnetic recording
US4781852A (en) * 1986-10-24 1988-11-01 Olin Corporation Process for making selected doped barium and strontium hexaferrite particles
JPH02296303A (en) * 1989-05-11 1990-12-06 Nippon Zeon Co Ltd Magnetic powder for magnetic record medium
WO1997042125A1 (en) * 1996-05-08 1997-11-13 Mitsui Mining & Smelting Company, Ltd. Black ultrafine magnetite particles and process for preparing the same
JP2001351811A (en) * 2000-05-25 2001-12-21 National Institute Of Advanced Industrial & Technology Tin-containing granular magnetic oxide particles and method for producing the same
JP4719431B2 (en) * 2004-06-21 2011-07-06 富士フイルム株式会社 Hexagonal ferrite magnetic powder, method for producing the same, and magnetic recording medium
JP5917452B2 (en) 2013-07-08 2016-05-18 富士フイルム株式会社 Method for producing hexagonal ferrite magnetic particles and method for producing magnetic recording medium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL95813C (en) * 1957-10-21 1960-11-15
DE3041960C2 (en) * 1979-11-08 1983-07-21 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa A method of manufacturing magnetic powder for high density magnetic recording
JPS5667904A (en) * 1979-11-08 1981-06-08 Toshiba Corp Preparation method of megnetic powder for high density magnetic recording
JPS6012973B2 (en) * 1980-05-08 1985-04-04 株式会社東芝 Method for producing Ba-ferrite powder
JPS5756329A (en) * 1980-09-22 1982-04-03 Toshiba Corp Manufacture of magnetic powder for magnetic recording medium
JPS6020327B2 (en) * 1981-10-16 1985-05-21 セントラル硝子株式会社 Wet manufacturing method for magnetoplumbite type ferrite particles

Also Published As

Publication number Publication date
IT1196198B (en) 1988-11-10
GB8418545D0 (en) 1984-08-22
FR2549821B1 (en) 1987-07-17
GB2144114B (en) 1986-08-06
IT8422018A1 (en) 1986-01-24
DE3427632C2 (en) 1986-07-17
US4551260A (en) 1985-11-05
FR2549821A1 (en) 1985-02-01
GB2144114A (en) 1985-02-27
DE3427632A1 (en) 1985-02-14

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